公开(公告)号：US11712769B2

公开(公告)日：2023-08-01

申请号：US16561665

申请日：2019-09-05

Applicant: OKUMA Corporation

Inventor： Kiyoshi Yoshino ,  Yosuke Ichigi

IPC: B23Q1/44 ,  B23B5/14 ,  B25J15/00 ,  B23Q17/09 ,  B23Q1/76

CPC classification number: B23Q1/44 ,  B23B5/14 ,  B23Q1/76 ,  B23Q17/0961 ,  B25J15/0019

Abstract: The collecting mechanism includes a holding unit and a controller. The holding unit has a pair of arms, and can sandwich a machined portion with the pair of arms. The holding unit can be switched between a holding state and a standby state. In the holding state, the pair of arms is closed to be in contact with the circumferential surface of the machined portion to sandwich the machined portion. In the standby state, the pair of arms is opened so as to stay near the circumferential surface of the machined portion with a space between the arms and the circumferential surface of the machined portion. The controller monitors whether cutting-off of the machined portion has been completed to keep the holding unit in the standby state before completion of the cutting-off and to switch the holding unit from the standby state to the holding state at the time of completion of the cutting-off.

公开(公告)号：US20230211448A1

公开(公告)日：2023-07-06

申请号：US17252056

申请日：2019-06-18

Applicant: MTU Aero Engines AG

Inventor： Martin ECKSTEIN ,  Daniel PFIRRMANN ,  Martin BUßMANN ,  Joachim BAMBERG

IPC: B23Q17/09 ,  G01N3/40 ,  G05B19/418

CPC classification number: B23Q17/0961 ,  G01N3/40 ,  G05B19/41875 ,  B23Q2717/003 ,  B23Q2717/006 ,  G01N2203/0053 ,  G01N2203/0248 ,  G05B2219/32222

Abstract: A method for checking at least one subregion of a component, in particular a component of a turbomachine, including at least the steps of a) providing a blank; b) producing at least the subregion from the blank by machining the blank using at least one tool and using at least one force sensor-to record at least one force curve of at least one force acting during machining on the at least one tool; c) checking whether there is at least one deviation-of the at least one force curve from at least one predetermined target curve-of the at least one force curve, the at least one deviation-characterizing at least one material defect-contained in an unmachined segment of the subregion. A checking device for checking at least a subregion of a component is also provided.

公开(公告)号：US20180088553A1

公开(公告)日：2018-03-29

申请号：US15438653

申请日：2017-02-21

Applicant: OMRON Corporation

Inventor： Tatsuya KOGA ,  Masahiro MURAI

IPC: G05B19/402

CPC classification number: G05B19/404 ,  B23Q17/0961 ,  G05B2219/37256 ,  G05B2219/39355 ,  G05B2219/41161 ,  G05B2219/41371 ,  G05B2219/41376 ,  G05B2219/41379 ,  G05B2219/42025 ,  G05B2219/42338 ,  Y02P90/265

Abstract: The invention provides a control device comprising: an actual value obtaining part, obtaining a torque actual value and a velocity actual value, wherein the torque actual value represents a torque generated by the driving source and the velocity actual value represents a velocity of the motion body; an inferring part, which calculates an external force inferred value and a velocity inferred value every other operation period based on the torque actual value by using an operation formula of a predetermined model representing driving of the motion body, wherein the external force inferring value represents an external force generated by the control system; and an output part, evaluating a reliability of the external force inferred value based on the velocity inferred value calculated together if the inferring part calculates the external inferred value, and effectively outputting the external force inferred value when it is judged that there is a designated reliability.

公开(公告)号：US20150104263A1

公开(公告)日：2015-04-16

申请号：US14511607

申请日：2014-10-10

Applicant: FANUC Corporation

Inventor： Gaku ISOBE

IPC: B23Q17/09

CPC classification number: B23Q17/09 ,  B23Q15/00 ,  B23Q17/0961 ,  G05B19/00 ,  Y10T408/21 ,  Y10T408/36 ,  Y10T408/57 ,  Y10T483/12 ,  Y10T483/132 ,  Y10T483/134 ,  Y10T483/138

Abstract: In a machine tool in which a spindle head is driven by a spindle head drive motor via a ball screw/nut mechanism, tools of different weights are each installed in the spindle head beforehand, a load torque applied to the spindle head drive motor is obtained, and relational data between the tool weight and the load torque is stored. When each tool is installed in the spindle head, the weight of the tool is estimated from, the load torque detected by a load torque detection unit while the spindle head is stopped, and the relational data between the tool weight and load torque.

Abstract translation: 在通过滚珠丝杠/螺母机构由主轴头驱动马达驱动主轴头的机床中，预先在主轴头中安装不同重量的工具，获得施加到主轴头驱动马达的负载转矩 ，并存储工具重量和负载转矩之间的关系数据。 当每个工具安装在主轴头上时，根据负载转矩检测单元在主轴头停止时检测到的负载转矩以及工具重量和负载转矩之间的关系数据估计工具的重量。

公开(公告)号：US06937942B2

公开(公告)日：2005-08-30

申请号：US10747274

申请日：2003-12-30

Applicant: Sang Ho Lee

Inventor： Sang Ho Lee

IPC: B23Q17/00 ,  B23Q17/09 ,  G01B3/44 ,  G05B19/18 ,  G05B23/02

CPC classification number: B23Q17/0957 ,  B23Q17/0961

Abstract: A method and apparatus is provided of detecting tool abnormality in a machine tool. Permissible minimum and maximum values of load current in a real cutting section are determined for a spindle motor and a servomotor during normal operation of the machine tool. The load current of the spindle motor and the servomotor is measured while the machine tool is operated. The load current measured in a real cutting section other than a non-cutting section is extracted by way of filtering the load current measured. A judgment is made as to whether the extracted load current is within a range between the minimum and maximum values. Occurrence of the tool abnormality is confirmed if the extracted load current falls outside the range. This enables the machine tool to detect not only overload condition due to excessive wear of a tool but also non-load condition induced by a tool breakage.

Abstract translation: 提供了一种在机床中检测工具异常的方法和装置。 在机床正常运行期间，主轴电机和伺服电机可以确定实际切割部分中负载电流的允许最小值和最大值。 主轴电机和伺服电机的负载电流在机床运行时测量。 通过过滤测量的负载电流来提取在非切割部分以外的实际切割部分中测量的负载电流。 判断所提取的负载电流是否在最小值和最大值之间的范围内。 如果提取的负载电流超出该范围，则确认工具异常的发生。 这使得机床不仅可以检测由于工具的过度磨损引起的过载状况，还检测由刀具断裂引起的非负载状况。

公开(公告)号：US20040153259A1

公开(公告)日：2004-08-05

申请号：US10747274

申请日：2003-12-30

Inventor： Sang Ho Lee

IPC: G01B003/44

CPC classification number: B23Q17/0957 ,  B23Q17/0961

Abstract: A method and apparatus is provided of detecting tool abnormality in a machine tool. Permissible minimum and maximum values of load current in a real cutting section are determined for a spindle motor and a servomotor during normal operation of the machine tool. The load current of the spindle motor and the servomotor is measured while the machine tool is operated. The load current measured in a real cutting section other than a non-cutting section is extracted by way of filtering the load current measured. A judgment is made as to whether the extracted load current is within a range between the minimum and maximum values. Occurrence of the tool abnormality is confirmed if the extracted load current falls outside the range. This enables the machine tool to detect not only overload condition due to excessive wear of a tool but also non-load condition induced by a tool breakage.

Abstract translation: 提供了一种在机床中检测工具异常的方法和装置。 在机床正常运行期间，主轴电机和伺服电机可以确定实际切割部分中负载电流的允许最小值和最大值。 主轴电机和伺服电机的负载电流在机床运行时进行测量。 通过过滤测量的负载电流来提取在非切割部分以外的实际切割部分中测量的负载电流。 判断所提取的负载电流是否在最小值和最大值之间的范围内。 如果提取的负载电流超出该范围，则确认工具异常的发生。 这使得机床不仅可以检测由于工具的过度磨损引起的过载状况，还检测由刀具断裂引起的非负载状况。

公开(公告)号：US5523701A

公开(公告)日：1996-06-04

申请号：US263344

申请日：1994-06-21

Applicant: Stephen F. Smith ,  Kimberly N. Castleberry

Inventor： Stephen F. Smith ,  Kimberly N. Castleberry

IPC: B23Q17/09 ,  G01M13/00 ,  G01R31/34 ,  G05B19/4065 ,  G07C3/00 ,  G01R31/00

CPC classification number: B23Q17/0961 ,  G01M13/00 ,  G01R31/343 ,  G05B19/4065 ,  G07C3/00 ,  G05B2219/37094 ,  G05B2219/37285 ,  G05B2219/37508 ,  G05B2219/50185

Abstract: Machine operating conditions can be monitored by analyzing, in either the time or frequency domain, the spectral components of the motor current. Changes in the electric background noise, induced by mechanical variations in the machine, are correlated to changes in the operating parameters of the machine.

Abstract translation: 可以通过在时域或频域中分析电机电流的光谱分量来监测机器操作条件。 机器机械变化引起的电气背景噪声的变化与机器运行参数的变化相关。

公开(公告)号：US4802274A

公开(公告)日：1989-02-07

申请号：US46066

申请日：1987-05-04

Applicant: Robert C. Petrof ,  Charles O. McHugh

Inventor： Robert C. Petrof ,  Charles O. McHugh

IPC: B23Q11/04 ,  B23Q17/09 ,  G05B19/4065 ,  B23B49/00

CPC classification number: G05B19/4065 ,  B23Q11/04 ,  B23Q17/0961 ,  G05B2219/37242 ,  G05B2219/37344 ,  G05B2219/50276 ,  Y10T408/172 ,  Y10T409/303808 ,  Y10T483/10 ,  Y10T483/136 ,  Y10T483/138

Abstract: A method is disclosed of determining worn rotary tools during machining operations, comprising: (a) establishing the steady-state dominant tool force level required to (i) carry out a rotary machining operation at a given set of cutting conditions in the abrasive wear regime, (ii) using a known worn rotary tool with a given geometry, and (iii) using a workpiece of given material; (b) supporting another rotary tool of the same given geometry in a holder for being power driven for rotation, the holder having means to impart a signal in response to exceeding a predetermined force level calibrated to be just below the steady-state force level of the worn tool; and (c) while employing the support tool, initiating an automatic tool change in response to any signal imparted by the tool support.

公开(公告)号：US20190184511A1

公开(公告)日：2019-06-20

申请号：US16162411

申请日：2018-10-17

Applicant: OMRON Corporation

Inventor： Reiko HATTORI ,  Takayoshi MATSUYAMA ,  Toru FUJII

IPC: B23Q11/04 ,  B23Q17/09 ,  G05B19/4062

CPC classification number: B23Q11/04 ,  B23Q17/0961 ,  G05B19/4062 ,  G05B2219/37632 ,  G05B2219/42295 ,  G05B2219/42321

Abstract: There are provided a load state diagnosis device and a load state diagnosis method for a servomotor. A PLC diagnoses the load state of the servomotor which rotationally drives a rotary tool in a predetermined rotational drive direction at a constant speed. The PLC includes a detection part that detects the rotational direction of a torque acting on the servomotor, a determination part that determines whether the rotational direction of the torque detected by the detection part is consistent with the predetermined rotational drive direction, and a load index output part that outputs a load index indicating the load state of the servomotor based on a determination result of the determination part.

公开(公告)号：US20190134766A1

公开(公告)日：2019-05-09

申请号：US16173647

申请日：2018-10-29

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Ho-Hwan Kim ,  Yoong-Je Park ,  Dae-Han Choi

IPC: B23Q17/09 ,  G08B21/18

CPC classification number: B23Q17/0957 ,  B23Q17/0961 ,  B23Q2039/006 ,  G08B21/187

Abstract: A system for detecting a damaged tool of multi-axis head machining equipment includes multi-axis head machining equipment, and a damaged tool detecting device connected to the multi-axis head machining equipment to detect a damaged tool, the damaged tool detecting device being configured to measure a current and a current change amount of the multi-axis head machining equipment to monitor a machining load, and a derivative and machining energy of the machining load, so as to detect whether there is an abnormality in a plurality of tools mounted on a multi-axis head during machining.